COATED ARTICLE AND METHOD FOR MAKING THE SAME

摘要

A coated article is described. The coated article includes an aluminum or aluminum alloy substrate, a combined gradient layer formed on the substrate, and a decorative layer formed on the combined gradient layer. The combined gradient layer includes a plurality of aluminum-oxygen-nitrogen layers. The atomic percentage of aluminum atoms within the combined gradient layer is gradually decreased from near the substrate to far away the substrate, the atomic percentages of oxygen atoms and nitrogen atoms within the combined gradient layer are gradually increased from near the substrate to far away the substrate. The decorative layer is a non-metallic layer. A method for making the coated article is also described.